扁平化手绘风城市夜景都市场景插画素材

8k ultra-clear illustration, modern minimalist style, night view of the city skyline, high-rise buildings with scattered heights and densities, arranged tightly, forming a dense urban landscape, the background is pure black, highlighting the outline of buildings in the foreground, and a gradient color matching of blue and purple, conveying the hustle and vitality of a modern city, while at the same time bringing the tranquil atmosphere of the night